
CEO, Creative Director
Sadé Bianca Dubois
One Diamond Atelier, our jewellery transcends luxury—it’s a radiant reflection of love, confidence, and the connections that define us. As the founder and creative force behind this vision, I poured my passion into every piece, returning to my roots in luxury, craftsmanship, and creativity when I established the atelier. Alongside my right-hand woman, Janke, we lead a team dedicated to making your story shine.
My journey began shaping iconic brands like Louis Vuitton and DKNY, where I honed a meticulous eye for fine craftsmanship and timeless design. Later, my path led to training as a counselling psychologist, specializing in relationship therapy, self-esteem, and social anxiety. This dual expertise—luxury and human connection—fuels my work, ensuring every diamond I hand-select and every design I craft is exceptional, ethically sourced, and deeply personal.
As CEO and Creative Director, I oversee a curated network of artisans, blending my perfectionist standards with a heart for storytelling. Whether it’s a bespoke engagement ring or a bold statement piece, I see each client as family—understood, valued, and celebrated. Luxury, to me, is more than flawless finishes; it’s the emotion and meaning behind every sparkle
Ready to craft your legacy? Let’s begin your bespoke journey with The One Diamond Atelier

Bespoke Client Experience Manager, Marketing & Digital Communications.
Janke de Klerk
Jewellery, to me, is more than craft—it’s a mirror of love, memories, and the moments that define us. As Sadé’s trusted right-hand woman and co-leader at The One Diamond Atelier, I’m passionate about weaving those stories into every bespoke piece we create.
With a foundation in fashion and marketing, I blend strategic insight with a love for thoughtful design, honed through years of building meaningful connections. My role is to guide you—whether you’re envisioning a custom engagement ring or seeking the perfect heirloom—ensuring your journey feels as luxurious as the final creation. I handpick every client interaction, matching your vision and budget to our curated network of artisans, delivering unparalleled quality with a personal touch.
For me, it’s the people that matter most. I thrive on understanding your story, offering support like a friend, and celebrating the love behind each diamond and gold piece. Beyond the atelier, I find joy in morning coffee rituals, invigorating runs, deep conversations, and my faith community—reminders of the connections that inspire my work.
At the heart of it all, I believe jewellery should feel as personal as the love it represents. And I can’t wait to be part of your journey.
Beyond my work, I cherish life’s simple joys, sipping my morning coffee, going for a run, having deep conversations, and spending time in my faith community. These moments remind me why I do what I do: to celebrate love, connection, and the beauty of the stories we share.
Stories, Inspiration & Expert Advice
Our Atelier Journal
Our Atelier Journal is your invitation to explore our world of inspiration, exquisite design, and the love we infuse into every piece we create. Discover the stories of connection, expert diamond advice, the details of our precious creations, and exclusive glimpses behind the scenes.

Flexible Payment Options Now Available with Float
We’re excited to announce a new way to shop at The One Diamond Atelier! With Float, you can now enjoy flexible, interest-free payment plans of up to 24 months, making it easier than ever to own the...
Read more
Beyond the Ring: The Art of Bridal Jewellery
The Bespoke Bridal Jewellery Experience: Completing Your Dream Wedding Look. Your wedding day is a masterpiece—every detail thoughtfully chosen to reflect your love story, style, and vision. At T...
Read more
Gerdus & Cecile’s Bespoke Engagement Ring Experience
When our client Gerdus set out to create the perfect engagement ring for Cecile, he envisioned something truly special, an elegant, timeless piece that reflected their love story. From hand-selecti...
Read moreDiamond Expertise
Learn About Diamonds

Lab-Grown vs. Natural Diamonds: The Latest Insights in the Lab-Grown vs. Natural Diamond Debate
The debate between lab-grown and natural diamonds is ongoing, with new developments and consumer preferences continuing to shape the industry. While lab-grown diamonds are celebrated for their affo...
Read more
The Ultimate Guide to Choosing the Perfect Diamond Shape When it comes to selecting the perfect diamond, the shape is a crucial element that reflects personal style, enhances the diamond's brillian...
Read more
The Symbolism and Meaning of the Different Diamond Shapes
Curious about what your diamond shape says about you? From the timeless round cut to the chic princess cut, each shape carries a unique symbolic meaning. Dive into the profound mes...
Read more